Ilyasov Valeriy Nikolaevich RussiaPerelyubLLC ≪Perelyubskaya Mining Company≫, 413750, Saratov region, Perelyubsky district, village PerelubG.M.ilyasov_09@mail.ru Author's articles Environmental Management – Combining Agricultural Technology and Geology Rhenium in the Volzhsky Stage Deposits of the Volga Shale Basin Central Part